TMS570LS3137: Read I/O status from HET1[17] （ A13） fail.

Hello User,

Please check that you have appropriately handled the pinmux details on this pin. This is one of a few pins that have both input and output multiplexing. Section 4.3.2 of the TRM covers the input multiplexing configuration.

Hi Chuck,
The package of the chip i used was 337(BGA) .I didn't find any info pinmux about HET117(A13).
Could you provide the details of how to initial of this pin,i want HET117 pin in input fucntion.
thanks.
Jeremy.

Hi Jeremy,

I assume pin F3 has not been configured to select N2HET1[17] functionality? is this correct? The default on F3 should be MibSPI1nCS[1]. Can you do either a screen capture or simply state what the values shown in the register browser for PINMMR20[17] and PINMMR24[16]? This will help understand what might be going on with this.

Hi Chuck,
I'm talking about A13,not F3.Please check again.
Jeremy Lin.

Jeremy,

Yes, I assumed you were using A13 as apposed to F3, but the state of the pinmux registers for pin F3 could affect pin A13 as well on the input side since NHET1[17] is routed to both pins but muxed behind the MibSPI function on F3. This is why I wanted to see how the PINMUX registers for pin F3 were configured so I could see this. If the named PINMMR registers are configured incorrectly, the input for NHET[17] would be routed to F3 rather than A13.